package com.skaz.util;

import io.jsonwebtoken.lang.Objects;

import java.util.Collection;
import java.util.Map;

/**
 * Asserts
 * ---------------------------------------------------------------------------------------------------------------------
 *
 * @author YRain
 */
public abstract class Asserts {

    //
    // YRain
    // -----------------------------------------------------------------------------------------------------------------
    public static void isEquals(boolean expression) {
        state(expression, "[Assertion failed] - this state invariant must be true");
    }

    //
    // junit.framework.Assert
    // -----------------------------------------------------------------------------------------------------------------
    public static void isEquals(Object expected, Object actual) {
        isEquals(expected, actual, null);
    }

    public static void isEquals(Object expected, Object actual, String message) {
        if (expected == null && actual == null) {
            return;
        }
        if (expected != null && expected.equals(actual)) {
            return;
        }
        failNotEquals(expected, actual, message);
    }

    public static void fail(String message) {
        if (message == null) {
            throw new AssertionError();
        }
        throw new AssertionError(message);
    }

    public static void failAndPrintStackTrace(String message) {
        Error e = null;
        if (message == null) {
            e = new AssertionError();
        }
        e = new AssertionError(message);
        e.printStackTrace();
        throw e;
    }

    public static String format(Object expected, Object actual, String message) {
        String formatted = "";
        if (message != null && message.length() > 0) {
            formatted = message + " ";
        }
        return formatted + "expected:<" + expected + "> but was:<" + actual + ">";
    }

    public static void failNotEquals(Object expected, Object actual, String message) {
        failAndPrintStackTrace(format(expected, actual, message));
    }

    //
    // 参考:
    // org.springframework.util.Assert
    // org.assertj.core.api.Assertions
    // -----------------------------------------------------------------------------------------------------------------

    /**
     * Assert a boolean expression, throwing {@code IllegalArgumentException} if the test result is {@code false}.
     * <p/>
     * <p>
     * <pre class="code">
     * Assert.isTrue(i &gt; 0, &quot;The value must be greater than zero&quot;);
     * </pre>
     *
     * @param expression a boolean expression
     * @param message    the exception message to use if the assertion fails
     * @throws IllegalArgumentException if expression is {@code false}
     */
    public static void isTrue(boolean expression, String message) {
        if (!expression) {
            throw new IllegalArgumentException(message);
        }
    }

    /**
     * Assert a boolean expression, throwing {@code IllegalArgumentException} if the test result is {@code false}.
     * <p/>
     * <p>
     * <pre class="code">
     * Assert.isTrue(i &gt; 0);
     * </pre>
     *
     * @param expression a boolean expression
     * @throws IllegalArgumentException if expression is {@code false}
     */
    public static void isTrue(boolean expression) {
        isTrue(expression, "[Assertion failed] - this expression must be true");
    }

    /**
     * Assert that an object is {@code null} .
     * <p/>
     * <p>
     * <pre class="code">
     * Assert.isNull(value, &quot;The value must be null&quot;);
     * </pre>
     *
     * @param object  the object to check
     * @param message the exception message to use if the assertion fails
     * @throws IllegalArgumentException if the object is not {@code null}
     */
    public static void isNull(Object object, String message) {
        if (object != null) {
            throw new IllegalArgumentException(message);
        }
    }

    /**
     * Assert that an object is {@code null} .
     * <p/>
     * <p>
     * <pre class="code">
     * Assert.isNull(value);
     * </pre>
     *
     * @param object the object to check
     * @throws IllegalArgumentException if the object is not {@code null}
     */
    public static void isNull(Object object) {
        isNull(object, "[Assertion failed] - the object argument must be null");
    }

    /**
     * Assert that an object is not {@code null} .
     * <p/>
     * <p>
     * <pre class="code">
     * Assert.notNull(clazz, &quot;The class must not be null&quot;);
     * </pre>
     *
     * @param object  the object to check
     * @param message the exception message to use if the assertion fails
     * @throws IllegalArgumentException if the object is {@code null}
     */
    public static void isNotNull(Object object, String message) {
        if (object == null) {
            throw new IllegalArgumentException(message);
        }
    }

    /**
     * Assert that an object is not {@code null} .
     * <p/>
     * <p>
     * <pre class="code">
     * Assert.notNull(clazz);
     * </pre>
     *
     * @param object the object to check
     * @throws IllegalArgumentException if the object is {@code null}
     */
    public static void isNotNull(Object object) {
        isNotNull(object, "[Assertion failed] - this argument is required; it must not be null");
    }

    /**
     * Assert that the given String is not EMPTY; that is,
     * it must not be {@code null} and not the EMPTY String.
     * <p/>
     * <p>
     * <pre class="code">
     * Assert.hasLength(name, &quot;Name must not be EMPTY&quot;);
     * </pre>
     *
     * @param text    the String to check
     * @param message the exception message to use if the assertion fails
     */
    public static void hasLength(String text, String message) {
        if (!Strings.hasLength(text)) {
            throw new IllegalArgumentException(message);
        }
    }

    /**
     * Assert that the given String is not EMPTY; that is,
     * it must not be {@code null} and not the EMPTY String.
     * <p/>
     * <p>
     * <pre class="code">
     * Assert.hasLength(name);
     * </pre>
     *
     * @param text the String to check
     */
    public static void hasLength(String text) {
        hasLength(text, "[Assertion failed] - this String argument must have length; it must not be null or EMPTY");
    }

    /**
     * Assert that the given String has valid text content; that is, it must not
     * be {@code null} and must contain at least one non-whitespace character.
     * <p/>
     * <p>
     * <pre class="code">
     * Assert.hasText(name, &quot;'name' must not be EMPTY&quot;);
     * </pre>
     *
     * @param text    the String to check
     * @param message the exception message to use if the assertion fails
     */
    public static void hasText(String text, String message) {
        if (!Strings.hasText(text)) {
            throw new IllegalArgumentException(message);
        }
    }

    /**
     * Assert that the given String has valid text content; that is, it must not
     * be {@code null} and must contain at least one non-whitespace character.
     * <p/>
     * <p>
     * <pre class="code">
     * Assert.hasText(name, &quot;'name' must not be EMPTY&quot;);
     * </pre>
     *
     * @param text the String to check
     */
    public static void hasText(String text) {
        hasText(text, "[Assertion failed] - this String argument must have text; it must not be null, EMPTY, or blank");
    }

    /**
     * Assert that the given text does not contain the given substring.
     * <p/>
     * <p>
     * <pre class="code">
     * Assert.doesNotContain(name, &quot;rod&quot;, &quot;Name must not contain 'rod'&quot;);
     * </pre>
     *
     * @param textToSearch the text to search
     * @param substring    the substring to find within the text
     * @param message      the exception message to use if the assertion fails
     */
    public static void isNotContain(String textToSearch, String substring, String message) {
        if (Strings.hasLength(textToSearch) && Strings.hasLength(substring) && textToSearch.contains(substring)) {
            throw new IllegalArgumentException(message);
        }
    }

    /**
     * Assert that the given text does not contain the given substring.
     * <p/>
     * <p>
     * <pre class="code">
     * Assert.doesNotContain(name, &quot;rod&quot;);
     * </pre>
     *
     * @param textToSearch the text to search
     * @param substring    the substring to find within the text
     */
    public static void isNotContain(String textToSearch, String substring) {
        isNotContain(textToSearch, substring, "[Assertion failed] - this String argument must not contain the substring [" + substring + "]");
    }

    /**
     * Assert that an array has elements; that is, it must not be {@code null} and must have at least one element.
     * <p/>
     * <p>
     * <pre class="code">
     * Assert.notEmpty(array, &quot;The array must have elements&quot;);
     * </pre>
     *
     * @param array   the array to check
     * @param message the exception message to use if the assertion fails
     * @throws IllegalArgumentException if the object array is {@code null} or has no elements
     */
    public static void isNotEmpty(Object[] array, String message) {
        if (Objects.isEmpty(array)) {
            throw new IllegalArgumentException(message);
        }
    }

    /**
     * Assert that an array has elements; that is, it must not be {@code null} and must have at least one element.
     * <p/>
     * <p>
     * <pre class="code">
     * Assert.notEmpty(array);
     * </pre>
     *
     * @param array the array to check
     * @throws IllegalArgumentException if the object array is {@code null} or has no elements
     */
    public static void isNotEmpty(Object[] array) {
        isNotEmpty(array, "[Assertion failed] - this array must not be EMPTY: it must contain at least 1 element");
    }

    /**
     * Assert that an array has no null elements.
     * Note: Does not complain if the array is EMPTY!
     * <p/>
     * <p>
     * <pre class="code">
     * Assert.noNullElements(array, &quot;The array must have non-null elements&quot;);
     * </pre>
     *
     * @param array   the array to check
     * @param message the exception message to use if the assertion fails
     * @throws IllegalArgumentException if the object array contains a {@code null} element
     */
    public static void isNotNullElements(Object[] array, String message) {
        if (array != null) {
            for (Object element : array) {
                if (element == null) {
                    throw new IllegalArgumentException(message);
                }
            }
        }
    }

    /**
     * Assert that an array has no null elements.
     * Note: Does not complain if the array is EMPTY!
     * <p/>
     * <p>
     * <pre class="code">
     * Assert.noNullElements(array);
     * </pre>
     *
     * @param array the array to check
     * @throws IllegalArgumentException if the object array contains a {@code null} element
     */
    public static void isNotNullElements(Object[] array) {
        isNotNullElements(array, "[Assertion failed] - this array must not contain any null elements");
    }

    /**
     * Assert that a collection has elements; that is, it must not be {@code null} and must have at least one element.
     * <p/>
     * <p>
     * <pre class="code">
     * Assert.notEmpty(collection, &quot;Collection must have elements&quot;);
     * </pre>
     *
     * @param collection the collection to check
     * @param message    the exception message to use if the assertion fails
     * @throws IllegalArgumentException if the collection is {@code null} or has no elements
     */
    public static void isNotEmpty(Collection<?> collection, String message) {
        if (Collections.isEmpty(collection)) {
            throw new IllegalArgumentException(message);
        }
    }

    /**
     * Assert that a collection has elements; that is, it must not be {@code null} and must have at least one element.
     * <p/>
     * <p>
     * <pre class="code">
     * Assert.notEmpty(collection, &quot;Collection must have elements&quot;);
     * </pre>
     *
     * @param collection the collection to check
     * @throws IllegalArgumentException if the collection is {@code null} or has no elements
     */
    public static void isNotEmpty(Collection<?> collection) {
        isNotEmpty(collection, "[Assertion failed] - this collection must not be EMPTY: it must contain at least 1 element");
    }

    /**
     * Assert that a Map has entries; that is, it must not be {@code null} and must have at least one entry.
     * <p/>
     * <p>
     * <pre class="code">
     * Assert.notEmpty(map, &quot;Map must have entries&quot;);
     * </pre>
     *
     * @param map     the map to check
     * @param message the exception message to use if the assertion fails
     * @throws IllegalArgumentException if the map is {@code null} or has no entries
     */
    public static void isNotEmpty(Map<?, ?> map, String message) {
        if (Collections.isEmpty(map)) {
            throw new IllegalArgumentException(message);
        }
    }

    /**
     * Assert that a Map has entries; that is, it must not be {@code null} and must have at least one entry.
     * <p/>
     * <p>
     * <pre class="code">
     * Assert.notEmpty(map);
     * </pre>
     *
     * @param map the map to check
     * @throws IllegalArgumentException if the map is {@code null} or has no entries
     */
    public static void isNotEmpty(Map<?, ?> map) {
        isNotEmpty(map, "[Assertion failed] - this map must not be EMPTY; it must contain at least one entry");
    }

    /**
     * Assert that the provided object is an instance of the provided class.
     * <p/>
     * <p>
     * <pre class="code">
     * Assert.instanceOf(Foo.class, foo);
     * </pre>
     *
     * @param clazz the required class
     * @param obj   the object to check
     * @throws IllegalArgumentException if the object is not an instance of clazz
     * @see Class#isInstance
     */
    public static void isInstanceOf(Class<?> clazz, Object obj) {
        isInstanceOf(clazz, obj, "");
    }

    /**
     * Assert that the provided object is an instance of the provided class.
     * <p/>
     * <p>
     * <pre class="code">
     * Assert.instanceOf(Foo.class, foo);
     * </pre>
     *
     * @param type    the type to check against
     * @param obj     the object to check
     * @param message a message which will be prepended to the message produced by
     *                the function itself, and which may be used to provide context. It should
     *                normally end in a ": " or ". " so that the function generate message looks
     *                ok when prepended to it.
     * @throws IllegalArgumentException if the object is not an instance of clazz
     * @see Class#isInstance
     */
    public static void isInstanceOf(Class<?> type, Object obj, String message) {
        isNotNull(type, "Type to check against must not be null");
        if (!type.isInstance(obj)) {
            throw new IllegalArgumentException((Strings.hasLength(message) ? message + " " : "") + "Object of class [" + (obj != null ? obj.getClass().getName() : "null") + "] must be an instance of " + type);
        }
    }

    /**
     * Assert that {@code superType.isAssignableFrom(subType)} is {@code true}.
     * <p/>
     * <p>
     * <pre class="code">
     * Assert.isAssignable(Number.class, myClass);
     * </pre>
     *
     * @param superType the super type to check
     * @param subType   the sub type to check
     * @throws IllegalArgumentException if the classes are not assignable
     */
    public static void isAssignable(Class<?> superType, Class<?> subType) {
        isAssignable(superType, subType, "");
    }

    /**
     * Assert that {@code superType.isAssignableFrom(subType)} is {@code true}.
     * <p/>
     * <p>
     * <pre class="code">
     * Assert.isAssignable(Number.class, myClass);
     * </pre>
     *
     * @param superType the super type to check against
     * @param subType   the sub type to check
     * @param message   a message which will be prepended to the message produced by
     *                  the function itself, and which may be used to provide context. It should
     *                  normally end in a ": " or ". " so that the function generate message looks
     *                  ok when prepended to it.
     * @throws IllegalArgumentException if the classes are not assignable
     */
    public static void isAssignable(Class<?> superType, Class<?> subType, String message) {
        isNotNull(superType, "Type to check against must not be null");
        if (subType == null || !superType.isAssignableFrom(subType)) {
            throw new IllegalArgumentException(message + subType + " is not assignable to " + superType);
        }
    }

    /**
     * Assert a boolean expression, throwing {@code IllegalStateException} if the test result is {@code false}. Call isTrue if you wish to
     * throw IllegalArgumentException on an assertion failure.
     * <p/>
     * <p>
     * <pre class="code">
     * Assert.state(id == null, &quot;The id property must not already be initialized&quot;);
     * </pre>
     *
     * @param expression a boolean expression
     * @param message    the exception message to use if the assertion fails
     * @throws IllegalStateException if expression is {@code false}
     */
    public static void state(boolean expression, String message) {
        if (!expression) {
            throw new IllegalStateException(message);
        }
    }

    /**
     * Assert a boolean expression, throwing {@link IllegalStateException} if the test result is {@code false}.
     * <p/>
     * Call {@link #isTrue(boolean)} if you wish to throw {@link IllegalArgumentException} on an assertion failure.
     * <p/>
     * <p>
     * <pre class="code">
     * Assert.state(id == null);
     * </pre>
     *
     * @param expression a boolean expression
     * @throws IllegalStateException if the supplied expression is {@code false}
     */
    public static void state(boolean expression) {
        state(expression, "[Assertion failed] - this state invariant must be true");
    }

}
